3x-45=18

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Solution for 3x-45=18 equation: 


Simplifying
3x + -45 = 18

Reorder the terms:
-45 + 3x = 18

Solving
-45 + 3x = 18

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '45' to each side of the equation.
-45 + 45 + 3x = 18 + 45

Combine like terms: -45 + 45 = 0
0 + 3x = 18 + 45
3x = 18 + 45

Combine like terms: 18 + 45 = 63
3x = 63

Divide each side by '3'.
x = 21

Simplifying
x = 21

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